For example this should be the Vancouver forecast - https://dd.weather.gc.ca/citypage_weather/xml/BC/s0000141_e....
I think this is the hourly data - though in a slightly odd format - https://dd.weather.gc.ca/nowcasting/matrices/
Edit: Aha found the nowcast docs - https://eccc-msc.github.io/open-data/msc-data/nwp_nowcasting...